“…The photochemical reactions of benzil in liquid solutions have been studied by several workers (16,19,22,37, 106, 140 In the above reactions, I is benzll, II is the ketyl radical. III is the ketyl radical anion, IV is monoprotonated stilbendiolate, V is the benzoin anion, k2 is a second-order rate constant, and ki is a first-order rate constant.…”